CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS (UNAUDITED) - USD ($)	3 Months Ended		6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018
CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS (UNAUDITED) [Abstract]
Revenue	$ 825,000	$ 1,121,000	$ 1,666,000	$ 1,986,000
Costs and expenses:
Patient expenses	84,000	378,000	170,000	756,000
Selling, general and administrative	365,000	388,000	673,000	666,000
Total	449,000	766,000	843,000	1,422,000
Operating income	376,000	355,000	823,000	564,000
Interest expense	(25,000)	(28,000)	(54,000)	(60,000)
Interest income	43,000	3,000	82,000	4,000
Interest income - sales-type sublease	35,000	0	73,000	0
Loss from investments in unconsolidated entities, net	(513,000)	(160,000)	(746,000)	(190,000)
(Loss) income before income taxes	(84,000)	170,000	178,000	318,000
Benefit (provision) for income taxes	25,000	(93,000)	(51,000)	(179,000)
Net (loss) income	$ (59,000)	$ 77,000	$ 127,000	$ 139,000
Basic and diluted net (loss) income per share (in dollars per share)	$ (0.01)	$ 0.01	$ 0.02	$ 0.02
Weighted average common shares outstanding (in shares)	7,792,185	7,792,185	7,792,185	7,792,185